Welcome Tony. New start and all that. I'm very sorry that your health has deteriorated, and hope and trust that you can help your circulatory problems.

From what I've read, it's recommended to take supplemental calcium and magnesium in the ratio of approx. 2 atoms of calcium to 1 of magnesium. Also, if one supplements with calcium and magnesium, it is important to have sufficient vitamin D to assimilate and utilize the minerials. Sufficient vitamin D can be synthesized in your body through about 1/2 hour daily of sun exposure without the use of sunscreen, or one can take about 400 iu of supplemental vitamin D daily.

To avoid kidney stones, do not take too much calcium/magnesium. There is a lot of calcium and magnesium in dark vegetables, legumes, fish, and nuts, a big part of my diet, so I only supplement once a day.

May you have a better New Year.